135results about How to "Guarantee the construction quality" patented technology

The invention discloses a sole plate post-poured strip form bracing system, applicable to sole plate post-poured strip form bracing of basement in constructional engineering. The form bracing system is mainly composed of components of a steel screen mould, a cable-stayed bolt and structural steel back plank, a precast slurry baffle concrete strick and a slurry baffle wood block. The invention utilizes a sole plate reinforcing mattress as a main bracing body, side pressure of concrete at the two sides of the post-poured strip can be effectively braced, the cavity of the formed post-poured strip is clean, tidy and clear and has no concrete pouring oozing or laitance pollution, most materials in the post-poured strip form bracing system are available and can be dismantled and recycled, and design function of post-poured strip can be effectively realized.

The invention relates to a rotary drilling rig coordinated with percussion drill hole-forming construction method which comprises forming field, locating and paying off, measuring elevation, calculating rotary digging depth and installing a plurality of temperature sensors in a permanent steel protective cylinder; rechecking a pile position; rotationally digging and drilling into a tundra layer; burying a temporary steel protective cylinder; measuring the depth of a hole and checking the formed hole; burying the permanent steel protective cylinder into a non-tundra layer; pulling out the temporary steel protective cylinder and moving a machine to conduct next construction of forming the hole rotationally; secondarily locating and sampling; locating a percussion drill; punching the hole; meanwhile digging a mud pit, producing mud and pouring the mud into the hole; secondarily measuring the depth of the hole and checking the formed hole; cleaning the hole; processing a reinforcing cage and hanging the reinforcing cage; installing a guide tube and conducting a water sealing test on the guide tube; measuring sediment and pouring concrete underwater; and curing the concrete. The rotary drilling rig coordinated with percussion drill hole-forming construction method offers a feasible technical measure for socketed pile construction and road repairing on frozen earth on island shape frozen earth area at high altitude in China and has notable economic benefit.

The invention discloses an assembly type steel frame connection node with a post-seismic recoverable function. A frame steel column comprises a column body and an outward extending short beam which are vertically fixedly connected, a post-seismic replaceable energy consumption connecting plate comprises an upper flange cover plate, a lower flange cover plate and a web cover plate, an upper flange of the outward extending short beam is fixedly connected to an upper flange of a body steel beam through the upper flange cover plate, an lower flange of the outward extending short beam is fixedly connected to a lower flange of a body steel beam through the lower flange cover plate, and a web of the outward extending short beam is fixedly connected to a web of the body steel beam through the web cover plate; a gap reserved between the outward extending short beam and the body steel beam is filled with a rubber pad plate; the upper flange of the body steel beam is fixedly connected to a concrete floor slab through a lift-resistant tooth-and-slot plate connecting piece. Through the double effects of connection and energy consumption exerted by the post-seismic replaceable energy consumption connecting plate, the structural damage and failure mechanism are actively controlled, it is guaranteed that the body structure keeps elasticity, damage occurs on a specified position, as a replaceable component, the post-seismic replaceable energy consumption connecting plate facilitates post-seismic replacement and repair, and a shear force connecting piece guarantees structural integrity and full exertion of combined stressed performance.

The invention discloses a method for water-stopping grouting plugging in a high-pressure high-flow water gush channel. The method comprises the following steps: observing opening degree of the water gush channel at the position of a water gush point, and determining water gush conditions; at a certain position from the water gush point, performing construction and drilling in the upstream water gush channel; when the drilling construction is performed to a set depth and is not communicated with the water gush channel, placing a sleeve in a drilled hole, plugging the whole sleeve; after the plugging is qualified, deepening the drilled hole to disclose the water gush channel, and connecting an aggregate adding device to the sleeve; utilizing the aggregate adding device to inject kelp into the water gush channel, wherein the kelp gradually remains at the position of the narrow position of the channel in the process of being carried by water and is accumulated and blocks a water channel, the flow cross-section of the channel is reduced, so that the water velocity is slowed down, and the water gush amount is reduced; and when the water gush amount is reduced to a set value, injecting grouting materials into the drilled hole, wherein the grouting materials are congealed and hardened in the water gush channel and thus the water gush channel is plugged.

The invention discloses a construction method for an assembly type annular reinforcement buckling concrete shear wall system. The construction method comprises the steps that prefabricated outer walls, prefabricated inner walls, prefabricated composite floor slabs, composite prefabricated air conditioner slabs and prefabricated stairs are transported to a construction site; prefabricated inner wall components of the first storey are lifted, corrected and fixed; the prefabricated air conditioner slabs, bay windows and molding bottom slabs of the first storey are lifted, corrected and fixed; prefabricated outer wall components of the first storey are lifted, corrected and fixed; prefabricated bay windows of the first storey are lifted, corrected and fixed; composite layer reinforcements of the first storey are bound; bottom beams and composite slabs of the first storey are subjected to cast-in-place concrete construction; cast-in-place columns and bay window components of the first storey are subjected to cast-in-place concrete construction; prefabricated component installation is conducted for outer molding of the first storey; the composite slabs of the upper layer are installed; and the steps above are conducted repeatedly till construction of the top storey is finished. By the adoption of the construction method, the construction quality can be guaranteed, and the assembly leakproofness is improved; and meanwhile, the construction time is shortened, and construction is accelerated.

The invention belongs to the field of civil engineering and discloses a light steel-concrete combination structure shear wall and a manufacturing method thereof. The light steel-concrete combination structure shear wall comprises a light-steel structure framework, reinforcing steel bars, cement boards and concrete, wherein the cement boards are used as permanent templates in a construction stage and as member protecting layers in a use stage; the light-steel structure framework is formed by connecting two or more than two cold-formed thin-walled steel or steel trusses together by using connecting pieces and has sufficient rigidity and bearing capacity in the construction stage; and the reinforcing steel bars are fixed on the light-steel structure framework, and a formed combination unit satisfies the stress requirements of the shear wall. The manufacturing method comprises the following steps of: fixing the reinforcing steel bars and the cement boards on both sides of the light-steel structure framework to form a space which satisfies the shape requirements of structural members; and then, pouring concrete. The shear wall can be used for various structural members, has the advantages of high durability and low cost and is suitable for industrial production.

The invention discloses a method for installing and constructing special-shaped large-tonnage steel castings. The large-tonnage steel castings are complex in shape and are hoisted through a heavy crawler crane. Before the steel castings are hoisted, a symmetric method is adopted to analyze and determine the installing positions of lifting lugs of the steel castings, and a welding work platform is arranged on the welding portions of the steel castings in advance. In the installing and constructing process, a sling of the crawler crane is used for controlling the vertical displacement of the steel castings, a wind cable is used for adjusting the horizontal displacement of the steel castings, and the installation accuracy and construction safety of the steel castings are guaranteed by means of temporary support and other measures; after the steel castings are installed in place, the quality of weld joints is guaranteed through a series of processes such as weld preheating, in-process heat preservation and postweld heat treatment according to the material characteristics of the steel castings and up-down welding structures. By means of the method, the standard requirements for joints of the special-shaped large-tonnage steel castings are met, the construction quality is ensured, connection is more reasonable and effective, the consumption of steel is reduced, and meanwhile the appearance quality of a building is improved.

The invention discloses a detachable prefabricated assembly type square steel tube concrete column base joint. The detachable prefabricated assembly type square steel tube concrete column base joint comprises a square steel tube concrete column and a reinforced concrete foundation, wherein a bottom plate is welded to the end of the square steel tube concrete column, high-strength screw rods are welded to the inner side of the bottom plate, the high-strength screw rods as anti-shearing members are connected with pre-embedded corrugated sleeves of the foundation, and meanwhile, the welding screw rods are coated with plastic films. Preformed screw holes are formed in the outer side of the steel tube bottom plate and used for making splice anchor bolts and the bottom plate connected. When the square steel tube concrete column base joint is assembled, connecting screw rods are screwed into the upper ends of through tang inner screw-thread steel sleeves through the preformed screw holes in the bottom plate respectively, so that splicing between the square steel tube concrete column and the foundation is achieved. When the steel tube concrete column is disassembled and replaced, the screw rods are screwed out, the anti-shearing members are taken out, high-strength castables in the corrugated sleeves are removed, and then the steel tube concrete column can be disassembled and replaced. All the members used in the square steel tube concrete column base joint can be assembled and connected on the site, site welding work and formwork engineering are reduced, the building industrialization assembly efficiency is improved, and the new architectural concepts that building members save energy and are environmentally friendly and detachable are embodied.

The invention discloses a U-shaped assembly type reinforced concrete cover board culvert which is enclosed through a prefabricated reinforced concrete cover board, prefabricated reinforced concrete side walls and a cast-in-place reinforced concrete bottom board. Prefabricated reinforced concrete side wall sections are prefabricated into a whole through vertical wall sections, vertical wall toe board sections and vertical wall heel board sections. Multiple transversely-arranged connecting reinforcing steel bars are embedded in each vertical wall toe board section and each vertical wall heel board section. The connecting reinforcing steel bars extend outwards from the longitudinal end face of each vertical wall heel board section. Multiple reinforcing steel bars are arranged in the cast-in-place reinforced concrete bottom board, wherein the two ends of each reinforcing steel bar are welded to the corresponding connecting reinforcing steel bars on the two sides. The cast-in-place reinforced concrete bottom board is sequentially connected with the vertical wall heel board sections opposite on the two sides in the axial direction of the culvert. The invention further discloses a construction method of the U-shaped assembly type reinforced concrete cover board culvert. Prefabricated components are manufactured in a centralized manner and lifted and spliced on a field, the engineering quality can be effectively improved, the construction period is saved, and economic benefits are improved.

The present invention provides a box-type deepwater positioning throwing boat and a usage method thereof which relate to the throwing boat technology field. The box-type deepwater positioning throwing boat comprises a boat body, wherein the boat body is equipped with a cabin port penetrating to the bottom surface of the boat body; a caisson arranged in the cabin port and comprising a box body side plate and a box body bottom door in movable connection with the box body side plate; an elevating system arranged on the boat body and connected with the box body side plate of the caisson; a positioning system arranged on the boat body and used for detecting the underwater landform and the sinking depth of the caisson; a central controller arranged on the boat body, connected with the elevating system and the positioning system and controlling the box body bottom door to open and close. The throwing boat of the present invention integrates the positioning, packing, metering and throwing as one, can work circularly, is in automatic joint control and visual operation, and is high in work efficiency guarantee rate.

An intelligent vacuum-cycle grouting machine comprises a high-speed mixing tank, a low-speed mixing tank, a grouting pump, a grouting outlet pipe and a grout returning pipe. The grout returning pipe is provided with a program-controlled three-way valve and is controlled by the program-controlled three-way valve to switch operating positions between communication with a vacuum pump and a material returning pipe. The material returning pipe is provided with a single high valve used for sealing while the vacuum pump performs vacuum operations. The grouting outlet pipe is provided with a program-controlled relief valve used for adjusting normal grouting pressure. A sensor used for detecting conveying position of grout and outputting control signals for controlling the vacuum pump to operate is arranged on a connecting pipe between the grouting outlet pipe and the grout returning pipe. The intelligent vacuum-cycle grouting machine has the advantages that the program-controlled three-way valve is used for switching between evacuating and grouting, pipeline assembly and disassembly during construction are omitted, and construction quality is guaranteed.

The invention provides a ground source heat pump deep well backfill grouting method. The ground source heat pump deep well backfill grouting method is characterized by comprising the following steps that after or while a heat exchange pipe is arranged in a deep well, a long grouting pipe is inserted into the bottom of the deep well; backfill slurry is conveyed to the bottom of the deep well through a slurry conveying pump by means of the long pipe, grouting is conducted at the bottom to fill a well shaft through counter pressure, and the surface of the slurry gradually rises to form back pressure; when the back pressure reaches a first pressure value, the long pipe starts to be lifted, the purpose that while grouting is conducted, the pipe is lifted is achieved, the back pressure is maintained between a second pressure value and the first pressure value until the slurry overflows from a well mouth, and then the whole deep well is filled with the slurry. By the adoption of the ground source heat pump deep well backfill grouting method, the high density of the backfilling slurry is guaranteed, the heat conducting capacity of the heat exchange deep well is greatly improved, the construction quality of a ground source heat pump system is effectively guaranteed, and energy conservation and emission reduction are really achieved.

The invention discloses an assembly-type multi-storey steel special-shaped column framework-steel plate shear wall structure system, and relates to the technical field of structural engineering. The assembly-type multi-storey steel special-shaped column framework-steel plate shear wall structure system comprises an assembly-type truss plate, assembly-type special-shaped columns and a steel plate shear wall component. The assembly-type truss plate comprises a lattice truss girder provided with a steel channel web member, and a floor slab. The assembly-type truss plate is prefabricated in a plant. On a construction site, the assembly-type truss plate is spliced with a flange plate of the assembly-type special-shaped columns through a beam-end blanking plate of the assembly-type truss plate. The assembly-type special-shaped columns are spliced on site through bolts between storeys to form a multi-storey truss plate steel framework structure. One the basis of the steel framework structure, a steel plate shear wall is connected to the truss girder in a beam and slab layer of the steel framework structure or the bottom or the top of each column and used as a lateral load resistance component. The assembly-type truss plate, the assembly-type special-shaped columns and the steel plate shear wall component are all prefabricated in the plant and assembled through bolts on the construction site.

The invention provides a method for laying geotextile underwater, which includes steps of: 1. berthing the laying ship along a dike axis; 2, fastening the geotextile to be layed with rope; 3. pulling the pulley set to coil the geotextile; 4. nailing two positioning steel pipes close to the ship edge; 5. putting the geotextile down close to the steel pipes; 6. laying the geotextile coil beneath water, pressing the geotextile edge with a stone bag, then moving the ship; 7. dropping a stone bag upon a determined distance of moving; 8. recycling geotextile tube in the water; 9. pressing the terminal edge of the geotextile with a stone bag, and laying the next block of geotextile. The method for laying geotextile underwater is capable of uniformly distributing gravity onto the draining board of the lower layer, and the phenomenon of draining board break due to partially bearing too much force. The method for layer geotextile underwater is further capable of effectively reducing maintenance frequency of the outer port channel, so as to reduce maintenance cost of the port.

The invention provides a dismountable assembly type circular steel tube concrete column. The dismountable assembly type circular steel tube concrete column mainly comprises an upper circular steel tube concrete column, a lower circular steel tube concrete column, a column flange connecting piece, two semicircular steel plates with holes and a pulling-resistant connecting pair. Structural measures of the circular steel tube concrete columns and the column flange connecting piece are reasonably designed, the pulling-resistant connecting pair is adopted for splicing the circular steel tube concrete columns, then grouting is carried out from the reserved semicircular holes of the semicircular steel plates, and finally, the dismountable fabricated circular steel tube concrete column is formed. When the circular steel tube concrete columns are replaced, a bolt bar is dismounted, so that the circular steel tube concrete columns and the column flange connecting piece are taken down, and further removal and replacement of the circular steel tube concrete columns are realized. The dismountable assembly type circular steel tube concrete column has the advantages that all the components are connected in a field assembly manner, building industrialization assembling efficiency is improved, dismounting, separating and replacing functions of an assembly type combined structure column-column component are realized, and a novel energy-saving and environment-friendly architectural concept that a building component can be dismounted and altered is shown.

The invention discloses a preparation method of a cold ramming paste specially used for submerged arc furnace whole furnace construction. The cold ramming paste comprises, by weight, 75 to 82 parts of a skeletal material, 16 to 20 parts of a binder, and 5 to 10 parts of an additive. The preparation method comprises following steps: A, the skeletal material is smashed into particles with a particle size lower than 12mm, and is weighed; B, the smashed skeletal material is delivered into a mixing kneading pot which is preheated to 60 to 80 DEG C for 15 to 25min, the binder and the additive are delivered into the same mixing kneading pot for 30 to 40min of mixing kneading, and an obtained product is cooled to room temperature and packaged. The cold ramming paste is mainly used for submerged arc furnace whole furnace construction.

The invention discloses a construction method of cover-and-cut reverse construction concrete walls and columns with vertical structures. The construction method comprises the following steps that a top plate is constructed, a lower returnable segment is arranged in the position of the top plate corresponding to a lower-layer wall and column, and sleeves and overlap-connected steel bars are reserved in the lower returnable segment; after the top plate is constructed, a layer of soil is excavated downwards from the top plate, wall and column steel bars are bound, and then, are connected to the overlap-connected steel bars, and a bottom plate is constructed; after the bottom plate is constructed, wall and column templates are supported to be closely attached to the lower returnable segment; and walls and columns can be formed by pouring concrete downwards in the sleeves reserved in the lower returnable segment. According to the invention, the construction method solves the problem that cover-and-cut reverse construction concrete walls and columns form a horn mouth shape in a supporting mode, or the construction process of a post filling method is complex, and the compactness of concrete in joints is difficult to control. The construction method reduces the construction difficulty, ensures the construction quality and accelerates the construction progress.

The invention relates to a treatment method for treating roadbed, in particular to a high-dosage lime stabilized soil subbase layer construction method which is fast in construction speed, high in achieving quality, and stable in soil subbase layer. The high-dosage lime stabilized soil subbase layer construction method includes eight steps of construction preparation, measuring and setting out, material preparation, soil arrangement and ash distribution, stirring, reshaping, grinding and activity preservation, wherein the step of material preparation includes lime preparation and soil preparation. When lime is prepared, the lime is firstly digested for 7-10 days and then sieved through sieving holes of 10 millimeters, and the water usage for digestion is 500-800 kilograms/ ton. When soil is prepared, the maximum size of the particle of the soil is not larger than 15 millimeters, and the quantity passing through sieving holes of 5 millimeters is larger than 60%. In the step of stirring, a stabilized soil mixer is matched with a ploughshare for stirring, and stirring depth is within the limit of infiltrating the subbase layer. When in construction, water content of the materials is detected timely, and the materials are watered when the water content is lower than -2% of the optimum water content and aired when the water content is larger than +2% of the optimum water content.

The invention relates to a waterpower self-excited oscillation jet flow vibratory pile sinking device and a pile sinking technology. A reinforced concrete pile body is a sheet pile, a square pile head and a hanging ring are arranged in the middle of the top of the reinforced concrete pile body, the reinforced concrete pile body is connected with a vibratory hammer part through a vibratory hammer connecting device, a jet flow pipe with a self-excited oscillation jet flow nozzle is arranged on the bottom of the sheet pile, the jet flow pipe is connected with a high pressure water pump group through a water pipe and rapid docking movable elbows, and the vibratory hammer part is connected with lifting equipment through an integrated lifting appliance. The waterpower self-excited oscillation jet flow vibratory pile sinking device and the pile sinking technology have the advantages that construction technologies of different strata can be resolved, construction efficiency can be improved greatly at the same time, construction quality is guaranteed, drawbacks and defects exist in the prior art are overcome or avoided, the problems of hard clay strata pile sinking speed and breakdown of underground obstacles are resolved, the purpose that undisturbed soil on two 2-meter-long sides of the bottom of the pile body in a pile sinking process is not damaged is achieved, the two sides of the pile body are filled with sand to enable disturbed soil on the two sides of the pile body to be replaced by silver sand, and fast consolidation is achieved.

The invention discloses an outward-wrapped-type anti-collision guardrail formwork reinforcing structure. A formwork comprises an outer formwork body and an inner formwork body. The longitudinal section of the outer formwork body is L-shaped, and the bottom of the outer formwork body is bent towards the bottom plane of a bridge and is supported on the bottom plane of the bridge through a supporting foot; the longitudinal section of the inner formwork body is in a broken-line shape, and the bottom face of the inner formwork body is supported on the upper plane of the bridge; ejection ribs are arranged between the outer formwork body and the inner formwork body for supporting and pull rods are arranged between the outer formwork body and the inner formwork body for tensioning. According to the reinforcing structure, the formwork is fixed through the ejection ribs and the pull rods firstly, supports and pull wires are oppositely arranged on a vertical seam between the two adjacent formworks so as to prevent the situation that a joint of the two formworks deforms and accordingly the defect of a concrete faulted slab remains permanently when the concrete is poured, the left of the vertical seam is 10 cm away from the right of the vertical seam, the problem that an outward-wrapped-type anti-collision guardrail formwork is difficult to reinforce is solved, and construction quality is guaranteed.

The invention provides a building construction method and device for temporarily supporting mobile split heads. The construction method comprises the following steps: constructing a template support system, binding floor slab rebars, arranging the mobile split heads, pouring concrete, pulling out the mobile split heads, trowelling the floor slab concrete for the first time, washing the mobile split heads and trowelling the floor slab concrete for the second time. The construction method and the construction device are used for stably and reliably protecting the bound rebar frameworks, are suitable for construction of horizontal members of various cast-in-situ double-layer rebar floor slabs and canopies and can effectively prevent upper rebars from sinking and bending and ensure the construction quality; the construction method is advanced and practicable and is simple to operate; the split heads can be dismantled and reused, thus further saving the cost and accelerating the construction progress under the premise of satisfying the use functions; under the premise of satisfying the requirements of use functions, the effects of saving energy and reducing consumption are achieved, the construction operation is simplified and the split heads can be produced in fixed shapes in series; therefore the construction device and the construction method have stronger applicability and economical efficiency and are respectively a new product and a new technology with stronger popularization and utilization values.

The invention relates to a steel-concrete combination deck plate and a construction method thereof, wherein the steel-concrete combination deck plate comprises: bottom steel plates arranged on steel girders, wherein the bottom steel plates in the bearing regions of the steel girders are bent in shape, and the bottom steel plates are 8-10 mm in thickness; a plurality of shear plates vertically connected to the bottom steel plates; a concrete tier including reinforcement fabric penetrating through the shear plates, wherein the concrete tier is cast to the bottom steel plates, and the combination deck plate is 10-15 cm in thickness. The steel-concrete combination deck plate uses the bottom steel plates as stress-bearing parts as well as a formwork for a cast-in-place desk concrete tier, and steps of mounting and releasing concrete formwork are omitted; the shear plates serve as stiffeners for the bottom steel plates, good combination of the bottom steel plates with the concrete tier can be guaranteed, and cracking of the concrete tier is prevented; the deck thickness is controlled to 10-15 cm and is reduced, the weight is 25% and above lower than that of a composite beam deck system, dead load is reduced, crossing ability, structural strength and durability of the main structure are improved, construction input is reduced, and the efficiency of a construction method is high.

A steel pipe concrete column variable section broken-line-shaped steel bracket comprises an upper flange plate, a lower flange plate and a web perpendicularly connected between the upper flange plate and the lower flange plate. The upper flange plate and the lower flange plate are the same in structure and each comprises N flange plate bodies and N-1 transition sections. Every two adjacent flange plate bodies are connected through one corresponding transition section, and thus a broken-line-shaped multilayer structure is formed. The elevation of the flange plate bodies is sequentially decreased section layer by section layer, the width is decreased layer by layer, the height difference between every two adjacent flange plate bodies is 2d, and d is the steel bar diameter. A construction method of the variable section broken-line-shaped steel bracket comprises the following steps of S1, variable section broken-line-shaped steel bracket deep design, S2, steel bracket segmented manufacturing in a processing factory, S3, steel pipe column and steel bracket field installation welding, S4, simulation test, steel bar welding and binding, and S5, concrete pouring and maintenance. According to the construction method for connecting a steel pipe concrete column with a concrete beam by using the variable section broken-line-shaped steel bracket, operation is easy and convenient, the construction process quality is controllable, and the structure safety can be improved.

The invention discloses a temporary anchoring structure of a segment prefabricated assembled concrete box girder. The temporary anchoring structure is characterized in that a sleeve is embedded in each prefabricated segment girder, a bolt hole is formed in the sleeve, an opening of the bolt hole is upward and faces the top of the prefabricated segment girder, steel tooth blocks are mounted on eachprefabricated segment girder, mounting holes are formed in the steel tooth blocks, the steel tooth blocks are connected with the sleeves through bolts, horizontal holes are formed in the steel toothblocks, finish rolling threaded steel bars are tensioned between the horizontal holes of corresponding steel tooth blocks of the two adjacent prefabricated segment girders, and temporary anchoring isachieved. Through the construction and measures, the construction speed is greatly accelerated, the construction quality is guaranteed, the overall landscape effect of the bridge is improved, and thetemporary anchoring structure is a very practical and safe temporary anchoring scheme, and can be widely adopted in prefabricated segment girder construction.

The invention discloses a small-section channel lining construction method. The method includes the steps that firstly, measurement lofting is conducted, wherein measurement lofting is conducted according to an excavated channel plane position provided by a design drawing; secondly, channel filling is conducted, wherein nearby matts are used for tidying and excavating an earthwork during channel filling, and laying and filling are conducted according to a horizontal layer; thirdly, channel excavation is conducted, wherein a back shovel device is used for one-time excavation forming; fourthly,a cushion layer is constructed, wherein a 5 cm sandy gravel cushion layer is stacked at the bottom of an excavated channel, and laying work of the sandy gravel cushion layer is then conducted; fifthly, channel lining is conducted, wherein an integral forming machine lining and manual lining manner is adopted for concrete pouring; and sixthly, surface finishing curing is conducted, wherein after the lining of the excavated channel is completed, manual calendering and surface finishing are conducted on the surface of the channel, and after concrete pouring is conducted for 18 h to 24 h, curing is conducted. By means of the construction method, due to the step of cushion layer construction and the step of channel lining construction, leakage of the channel is effectively prevented.

The invention discloses an installing device and method for spiral air hoses in an ultra high and large space truss and relates to the technical field of ventilation and air conditioner engineering in order to solve the problems that when existing spiral air hoses in the ultra high and large space truss are installed, installing efficiency is low, the danger degree is high and air hose positioning and leveling are difficult. The installing device comprises a plurality of hanging type lifting platforms and a plurality of branch hanging frames, each hanging type lifting platform comprises a steel platform system and a hanging and lifting system, the hanging type lifting platforms are hung on purlines of the truss, and the branch hanging frames are installed on the truss. The construction method includes the steps that scaffolds are erected on the two sides of the truss, a header branch hanging frame is fixed to an upper chord frame of the truss, and the single-segment spiral air hoses are hoisted into the truss and spliced; second, an air hose header is hoisted to the designed elevation along with the truss as a whole and is installed; third, an electric hoist is fixed to the purlines of the truss, and an air hose main pipe, branch pipes and air ports are hoisted and installed through the electric hoist and the hanging type lifting platforms.

The invention provides a construction method for free wiring in a wall by pre-burying a vertical pipeline in a vertical hole of a building block by using the characteristic of a hollow building block, pre-burying a horizontal pipeline in a U-shaped building block and using a horizontal tie beam for the horizontal pipeline. The method has the effects that synchronization of the construction of the building block and pre-burying of water and electric pipelines can be guaranteed, the pipeline can be freely wired in the wall, the wall is not required to be cut, a groove is not required to be chiseled to bury the pipeline, the construction quality of the building block can be guaranteed, the wall decoration does not crack easily, the construction progress is quickened, and the manufacturing cost is reduced.

The invention discloses a light type lifting vacuum planetary stirrer belonging to material stirring devices. The light type lifting vacuum planetary stirrer comprises a positioning barrel, a transmission stirring system and a lifting guide system, wherein an inner cavity of the positioning barrel is used for placing material buckets, the stirrer further comprises a vacuum pump which is communicated with the inner cavity of the positioning barrel and used for carrying out vacuumization on the inner cavity of the positioning barrel; the positioning barrel is further provided with a barrel cover hermetically contacted with the positioning barrel, the transmission stirring system internally comprises a power device, a planetary carrier and at least two stirring shafts, the transmission stirring system hoisted by a reinforcement rope of a winch replaces a hydraulic lifting system of the stirrer, and the self weight of the stirrer can be greatly reduced. The light type lifting vacuum planetary stirrer provided by the invention is especially suitable for carrying out mixing procedure of high-viscosity double-component sealant before construction, and is simple in structure, small in volume, convenient to install and transport, suitable for industrialized production and easy to popularize.

The invention relates to an auxiliary quick construction method of a temporary light rail in a coke furnace building thermal state project. Details of the auxiliary quick construction method are as follows: universal scaffold steel pipes and flat steel are connected into the temporary light rail, and the light rail is laid on the top face of a coke furnace, so as to be convenient for the building when the coke furnace is in thermal state construction and for the grouting construction of thermal state refractory mortar; moreover, plane transportation is freely carried out on refractory materials on the top face of the coke furnace. The auxiliary quick construction method includes the following steps: the setting-up of a stirring station, the laying of the temporary light rail, the transportation of the refractory materials, the proceeding of preparation work, the demolishing of the temporary light rail, and the like. The temporary light rail in the invention replaces a traveling crane to carry out plane transportation on materials and equipment, so as to lead each working procedure to be smoothly linked and to be convenient for the plane transportation of the materials on the top face of the coke furnace, thereby ensuring the construction quality, shortening the construction period and reducing the number of construction workers at the same time. A limited plane and a flat surface layer on the top face of the coke furnace are reasonably utilized, which greatly reduces workload on the hot top face of the coke furnace. Moreover, limited personnel can walk on the top face of the coke furnace as less as possible, so as to avoid potential safety hazards during the construction.

The invention provides a hole-cleaning method for washing a pile hole and pumping sand. During the hole cleaning, gravel-containing slurries are sucked and filtered by a slurry sucking pump, and then recycled, so that the workload for the outward transport of the slurries is reduced, and the number of the slurries is reduced; then the clear water is used for replacing the slurries according to the replacement principle, so that the concentration of the slurries is quickly reduced; the fine sand precipitating speed is increased; the clear water is used for flushing the precipitated residues on the bottom of the hole; the precipitated residues are directly pumped out of the hole by the slurry sucking pump; the floating and precipitating processes are eliminated; the hole cleaning speed is increased.